Add Lua as Compile Target in Viewer Script Editor

[bennettgoble]

Description

Modify the script editor to allow Lua as a compile target (in addition to LSL)

Old:

New (Wireframe):

Acceptance Criteria

• "Lua" available as a compile option when editing scripts on Lua-enabled regions
• Lua should not be listed as an option if it is not supported by the region

[LLGuru]

Hi @bennettgoble

There are some questions

• Which branch in the server repo contains the corresponded changes?
• What should happen if the object with the script targeted to Lua is moved to the region with no Lua support?

Thanks!

[LLGuru]

Implemented in #3467

Region with no Lua support ("Lua" option is disabled):

The server part is implemented in https://github.com/secondlife/server/pull/1676